<template>
<div class="app-container">
    <h1 style="text-align:center">课程列表</h1>

     <!--查询表单-->
    <el-form :inline="true" class="demo-form-inline">
     <el-form-item>
        <el-input v-model="courseQuery.courseName" placeholder="课程名称"/>
     </el-form-item>
     <el-form-item>
       <el-select v-model="courseQuery.status" clearable placeholder="发布状态">
         <el-option value="Normal" label="已发布"/>
         <el-option value="Draft" label="未发布"/>
       </el-select>
     </el-form-item>
        <el-button type="primary" icon="el-icon-search" @click="getPageCourseList()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
    </el-form>
 <!-- 表格 -->
  <el-table :data="courseList" border fit highlight-current-row>
    <el-table-column label="序号" width="70" align="center">
    <template slot-scope="scope">
    {{ (current - 1) * limit + scope.$index + 1 }}
    </template>
    </el-table-column>
    <el-table-column prop="title" label="课程名称" width="80" />
    <el-table-column label="课程状态" width="80">
    <template slot-scope="scope">
    {{ scope.row.status==='Normal'?'已发布':'未发布' }}
    </template>
    </el-table-column>
    <el-table-column prop="lessonNum" label="课时数" />
    <el-table-column prop="gmtCreate" label="添加时间" width="160"/>
    <el-table-column prop="viewCount" label="浏览数量" width="60" />
    
    <el-table-column label="操作" width="200" align="center">
    <template slot-scope="scope">
    <router-link :to="'/course/modifyInfo/'+scope.row.id">
    <el-button type="primary" size="mini" icon="el-icon-edit">修改课程信息</el-button>
    </router-link>
    <router-link :to="'/course/chapter/'+scope.row.id">
    <el-button type="primary" size="mini" icon="el-icon-edit">修改章节信息</el-button>
    </router-link>
    <el-button type="danger" size="mini" icon="el-icon-delete"
     @click="removeDataById(scope.row.id)">删除</el-button>
    </template>
    </el-table-column>
  </el-table>

<!-- 分页 -->
<el-pagination :current-page="current" :page-size="limit" :total="total"
style="padding: 30px 0; text-align: center;" layout="total, prev, pager, next, jumper"
@current-change="getPageCourseList"/>
</div>
</template>
<script>
import courseAPI from '@/api/edu/course'
export default{
    data(){
     return{
      courseList: [],
      total: 0,
      current: 1,
      limit: 10,
      courseQuery:{}
    }
      
    },
    created(){
       this.getPageCourseList();
    },
    methods: {
        getPageCourseList(current=1){
           this.current=current
           courseAPI.getPageCourseList(this.current,this.limit,this.courseQuery)
           .then(response=>{
              this.courseList=response.data.list;
              this.total=response.data.total;
           })
           .catch(err=>{
            this.$message({
                type: 'error',
                message: '拉取列表失败！'
            })
           })
        },
        resetData(){
         this.courseQuery={}
         this.getPageCourseList()
        },
        removeDataById(courseId){
         this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
         }).then(() => {
         courseAPI.removeCourseById(courseId)
         .then(response=>{
            this.$message({
               type: 'success',
               message: '删除成功！'
            })
           this. getPageCourseList();
         })
         .catch(err=>{
            this.$message({
               type: 'error',
               message: '删除失败！'
            })
         })
         })
        }
    }
}
</script>

